Klout has written two blog posts to make the calculations more transparent.

In the first post, Klout explains that it has tweaked its scoring model since launch. "In our previous Scoring model, the main driver of your Klout was a primary network (the one you’re best on) and, to be honest, your influence on secondary networks was too small a part of your Score. Now, a user who has two networks that are fairly equal in terms of participation and influence will see a greater parity in the way we score those two."

Not every interaction by everyone in a network is measured equally. Take retweets for example: "User A Retweets me but she also Retweets 100 others in the same day. User B Retweets me and only me. Klout now consider these ratios in our algorithm and consider the singular Retweet as a greater sign of influence."